Need help customizing Twenty Eleven

I’d like to change some stuff as far as appearance and need help. I am a semi beginner LOL

#1. I’d like a think black border around the entire page itself

#2. A darker black line than there is between each post.

#3. I would like for the photo to be a tad bit taller (I intend putting my own in there)

#4. I would like for the picture to butt up against the nav bar

#5. I would like to either A) bump the photo all the way up to the top of the page, to the edge of the white. OR change the font and font size of the title. I know there is a way to just bump the title off of the page so that I don’t lose the SEO in it? But I forgot how.

#6. Last but not least IS there a way to make this theme have 2 sidebars?